A boy after swimming comes out from a poolcovered with a film of waterweighing 80 g .How much heat must be suppliedto evaporate this water ? (Delta_(v) H^(@)=40.79 kJmol^(-1))

A boy after swimming comes out from a poolcovered with a film of water

1.	A boy after swimming comes out from a poolcovered with a film of waterweighing 80 g .How much heat must be suppliedto evaporate this water ? (Delta_(v) H^(@)=40.79 kJmol^(-1))
Answer» `1.61 xx10^(2) KJ` `1.71 xx 10^(2)kJ` ` 1.81xx10^(2) kJ ` ` 1.91 xx 10^(2) kJ ` Solution :Given `: Delta_("vap") H^(@) `for`H_(2)O= 40.79 kJ mol^(-1)` WATER to be evaporated`= 80 g( 80)/( 18) MOLE` `=4.44` mole Heat required for evaporated of 1 moleof `H_(2)O =40.79kJ` `:. `Heat required for evaporated of 4.44 moleof`H_(2)O=40.79 xx 4.44 = 1.81 xx 10^(2) kJ`